Preparation method of metal nanoparticle modified graphene composite material

A technology of metal nanoparticles and composite materials, which is applied in the field of preparation of graphene composite materials, can solve the problems of unfavorable scale production and utilization of final products, difficult control and adjustment of metal or oxide morphology, cumbersome steps, etc., so as to facilitate the promotion Utilization, controllable shape, and scientific preparation method

Inactive Publication Date: 2014-01-15
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this preparation method obtains a metal-graphene composite material, there are also shortcomings. First, it is difficult to effectively control and adjust the morphology of the metal or o

Method used

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  • Preparation method of metal nanoparticle modified graphene composite material
  • Preparation method of metal nanoparticle modified graphene composite material
  • Preparation method of metal nanoparticle modified graphene composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The concrete steps of preparation are:

[0025] First, the graphene sheets, metal nanoparticles and ethanol are mixed according to a mass ratio of 1:100:500, and ultrasonicated for 10 minutes to obtain a mixed liquid; wherein, the metal nanoparticles are silver nanospheres. Then the mixture was centrifuged 5 times at a speed of 12000r / min, each time for 10min, to obtain a mixture similar to figure 1 The graphene composite decorated with metal nanoparticles is shown.

Embodiment 2

[0027] The concrete steps of preparation are:

[0028] Firstly, the graphene sheets, metal nanoparticles and ethanol are mixed according to the mass ratio of 1.5:88:630, and ultrasonicated for 11 minutes to obtain a mixed liquid; wherein, the metal nanoparticles are silver nanospheres. Then the mixture was centrifuged 4 times at a speed of 13500r / min, each time for 11min, to obtain a mixture similar to figure 1 The graphene composite decorated with metal nanoparticles is shown.

Embodiment 3

[0030] The concrete steps of preparation are:

[0031] Firstly, the graphene sheets, metal nanoparticles and ethanol are mixed according to the mass ratio of 2:75:750, and ultrasonicated for 12 minutes to obtain a mixed liquid; wherein, the metal nanoparticles are silver nanospheres. Then the mixed solution was centrifuged 4 times at a speed of 14300r / min, each time for 12min, to obtain the following figure 1 The graphene composite decorated with metal nanoparticles is shown.

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Abstract

The invention discloses a preparation method of a metal nanoparticle modified graphene composite material. The preparation method comprises the steps of preparing a graphene flake and a metal nanoparticle: firstly, mixing the graphene flake, the metal nanoparticle and ethanol according to the mass ratio of (1-3): (50-100): (500-1000), and carrying out ultrasonic treatment for at least 10min to obtain a mixed solution; then, centrifuging the mixed solution at the rotating speed of 12000-16500r/min for at least three times to obtain the metal nanoparticle modified graphene composite material, wherein the lasting time for centrifuging every time is at least 10min, the metal nanoparticle is modified on the graphene flake, the graphene flake has the length of 2-4mu m, the width of 1-3mu m and the thickness of less than or equal to 1nm, the metal is one of silver, gold, palladium, platinum, copper, ferrum, cobalt and nickel, and the nanoparticle is one of a nanosphere, a triangular nanoplate, a nanocube and a nanorod. The preparation method is not only convenient and rapid, but also capable of ensuring that the metal nanoparticle in the prepared metal nanoparticle modified graphene composite material is controllable in appearance.

Description

technical field [0001] The invention relates to a method for preparing a graphene composite material, in particular to a method for preparing a graphene composite material modified with metal nanoparticles. Background technique [0002] Graphene is a single-layer carbon atom film exfoliated from graphite material, which is a honeycomb two-dimensional crystal composed of single-layer hexagonal cell carbon atoms. Based on the unique electrical, mechanical, thermal, and mechanical properties of graphene, it has received extensive attention in the fields of chemistry, physics, materials, energy, and the environment in recent years. At present, graphene and metal nanoparticle composite materials have become a research hotspot for scientists because of their excellent properties and potential application prospects in the fields of energy storage, catalysis, biomedicine, and electronic devices. For example, in October 2009 A "nano-graphene-based composite wave-absorbing material a...

Claims

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Application Information

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IPC IPC(8): C01B31/04B22F1/00B22F9/24B82Y40/00B82Y30/00C01B32/182
Inventor 王秀娟孟国文黄竹林钱益武
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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